1303220231320 has 256 divisors, whose sum is σ = 3458583152640. Its totient is φ = 432686112768.

The previous prime is 1303220231303. The next prime is 1303220231359. The reversal of 1303220231320 is 231320223031.

It is a junction number, because it is equal to n+sod(n) for n = 1303220231291 and 1303220231300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1192332694 + ... + 1192333786.

It is an arithmetic number, because the mean of its divisors is an integer number (13510090440).

Almost surely, 2^{1303220231320} is an apocalyptic number.

1303220231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1303220231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729291576320).

1303220231320 is an abundant number, since it is smaller than the sum of its proper divisors (2155362921320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1303220231320 is a wasteful number, since it uses less digits than its factorization.

1303220231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1303220231320 its reverse (231320223031), we get a palindrome (1534540454351).

The spelling of 1303220231320 in words is "one trillion, three hundred three billion, two hundred twenty million, two hundred thirty-one thousand, three hundred twenty".